公开(公告)号：US20230095056A1

公开(公告)日：2023-03-30

申请号：US17952351

申请日：2022-09-26

Applicant: Southwest Petroleum University ,  Haohan Well Completion & Logging Science and Technology Limited Company

Inventor： Xingyu CHEN ,  Yingfeng MENG ,  Gao LI ,  Yijian CHEN ,  Hongtao LI ,  Lunping ZHANG ,  Kejing WANG

IPC: E21B47/18

Abstract: A pressure pulse communication system and method during gas drilling are provided. The system includes a downhole solenoid valve module and a sensor module, where the downhole solenoid valve module includes a valve body, a gas inlet, a piston micro-hole, a moving piston, a piston return spring, a piston cylinder, a gas outlet, a piston pressure relief hole, a solenoid valve spring, a solenoid valve, a battery, a pressure balancer, and a rubber seal. The pressure pulse communication system and method generate pressure pulses by changing the internal pressure of a drill pipe, such that a surface pressure sensor continuously receives the pressure pulses, thereby achieving the purpose of acquiring downhole temperature, pressure, and well inclination angle data.

公开(公告)号：US20200333221A1

公开(公告)日：2020-10-22

申请号：US16305943

申请日：2017-09-27

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Gao LI ,  Ze CHEN ,  Yijian CHEN ,  Xin YU ,  Dong LIU ,  Yi ZHANG

IPC: G01N3/08 ,  G01N3/06 ,  G01N33/24

Abstract: A strain and acoustic wave testing device includes an acoustic wave transmitting terminal, an upper pressure-bearing shaft, corundum ejector pins, an upper displacement slide, a lower displacement slide, a heat insulation shell, a carbon fiber sleeve, a rock sample, a lower pressure-bearing shaft, an acoustic wave receiving terminal, a lower copper electrode, pearl powder, a temperature sensor, a transformer, a temperature-acoustic wave control box, an oscilloscope, an upper copper electrode, and a data collection and processing system.

公开(公告)号：US20240166936A1

公开(公告)日：2024-05-23

申请号：US18305910

申请日：2023-04-24

Applicant: Southwest Petroleum University ,  Yao Bai Special Cement Technology Research and Development Co., Ltd.

Inventor： Gao LI ,  Hongtao LI ,  Yijian CHEN ,  Dong XIAO ,  Jun JIANG ,  Wenhe XIA ,  Yongjie LI

IPC: C09K8/467 ,  C04B14/02 ,  C04B24/20 ,  C04B24/26 ,  C04B28/02 ,  C04B40/00

CPC classification number: C09K8/467 ,  C04B14/024 ,  C04B24/20 ,  C04B24/2652 ,  C04B28/02 ,  C04B40/0046 ,  C04B2103/408

Abstract: A method for preparing heat-conductive cement slurry for well cementation includes the following steps: S1, uniformly mixing sodium 1-butanesulfonate, sodium dodecyl diphenyl ether disulfonate and polyvinylpyrrolidone to obtain an admixture; S2, dissolving the admixture in deionized water and stirring to obtain a dispersant solution; S3, adding graphite to the dispersant solution and stirring to obtain a graphite dispersion; S4, stirring cement and deionized water in a slurry cup to obtain cement slurry; and S5, mixing and stirring the graphite dispersion and the cement slurry to obtain the heat-conductive cement slurry. The heat-conductive cement slurry can effectively improve the heat conductivity coefficient of set cement, and significantly improve the heat conductivity of the set cement, and has a broad market application prospect.

公开(公告)号：US20220290561A1

公开(公告)日：2022-09-15

申请号：US17394071

申请日：2021-08-04

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Ping GUO ,  Zhouhua WANG ,  Yijian CHEN ,  Bowen SUN ,  Chao DONG ,  Yisheng HU ,  Shuoshi WANG

IPC: E21B49/08 ,  E21B49/00 ,  G01N30/02 ,  G01N33/28 ,  G01N33/24

Abstract: The invention relates to a device for testing the three-phase saturation of oil, gas and water in a high-temperature and high-pressure planar model, comprising a displacement pump 1, a confining pressure pump 2, a back pressure pump 3, containers, a planar model system 21, a data acquisition system 22, a back pressure valve 23 and an oil-gas separator 24. The planar model system includes a planar model 27, an autoclave body 31, a heating temperature-controlling system 34, a Y-axis direction stepping motor 35, a X-axis direction stepping motor 36 and an acoustoelectric detector 41. A method for testing the three-phase saturation of oil, gas and water by using the device includes: calibrating three-phase saturation of oil, gas and water to a rock core, preparing a formation water sample and a crude sample, regaining the original formation conditions of the planar model, simulating the depletion or displacement process of oil reservoirs, performing linear ultrasonic-and-resistivity-scanning test on planar model, determining the three-phase saturation distribution of oil, gas and water in the planar model. The invention has simple operation and intuitive measurement, and provides tools and means for testing the three-phase saturation of oil, gas and water during the depletion or displacement development of oil-gas reservoirs.

公开(公告)号：US20200217193A1

公开(公告)日：2020-07-09

申请号：US16305895

申请日：2017-09-27

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Gao LI ,  Yi FENG ,  Shunhui YANG ,  Yijian CHEN ,  Na WEI ,  Yingfeng MENG ,  Rui LI

IPC: E21B49/00 ,  E21B21/08 ,  E21B21/10 ,  E21B43/12 ,  E21B43/26 ,  E21B34/08

Abstract: A mineshaft-stratum fracture coupled flowing simulation experiment device includes a simulated mineshaft flowing system, a simulated stratum system, a simulated fracture system and a data acquisition system. The simulated mineshaft flowing system includes simulated mineshaft, simulated drilling rod, drilling fluid storage tank, stirring motor, and drilling fluid screw pump. The simulated drilling rod is located in center of the simulated mineshaft. The stirring motor is provided in the drilling fluid storage tank. The drilling fluid screw pump is connected to an inlet end of the simulated drilling rod through the drilling fluid storage tank. The simulated stratum system includes simulated stratum, clean water storage tank, separation tank, gas storage tank, gas air-compressor, and clean water screw pump. The gas storage tank is connected to the gas air-compressor and is connected to the simulated stratum through a gas pressure regulating valve.

公开(公告)号：US20220205896A1

公开(公告)日：2022-06-30

申请号：US17488536

申请日：2021-09-29

Applicant: Southwest Petroleum University

Inventor： Wenlian XIAO ,  Yubin YANG ,  Jitian REN ,  Wanfen PU ,  Shuaishuai LIU ,  Xiao GUO ,  Yongming LI ,  Kun WANG ,  Lingli ZHENG ,  Jinzhou ZHAO ,  Yijian CHEN ,  Quantang FANG

IPC: G01N15/08

Abstract: A high-temperature and high-pressure microscopic visual flowing device and an experimental method are provided by the present disclosure, comprising a seepage simulation system, a micro-displacement and metering system connected to the seepage simulation system, and an image acquisition and analysis system; the seepage simulation system consists of a visual high-temperature and high-pressure kettle, a microscopic core model placed in the visual high-temperature and high-pressure kettle, and glass carriers arranged above and below the microscopic core model; the glass carriers are provided with sealing rubber sleeves, and the visual high-temperature and high-pressure kettle is provided with an annular heating jacket; an outlet of the microscopic core model is provided with a microflow channel which is connected to the micro-displacement and metering system through a pipe, effectively reducing the metering error caused by the dead volume of the pipe.

公开(公告)号：US20190024504A1

公开(公告)日：2019-01-24

申请号：US15922937

申请日：2018-03-16

Applicant: Southwest Petroleum University ,  Haohan Well Completion&Logging Science and Technology Limited Company

Inventor： Xingyu CHEN ,  Yingfeng MENG ,  Gao LI ,  Yijian CHEN ,  Yang WANG ,  Lunping ZHANG

IPC: E21B47/12

CPC classification number: E21B47/123 ,  G02B6/4428 ,  G02B6/504

Abstract: A logging-while-drilling optical fiber communication device includes a rotary wireless transceiver module fixed on a protective connector; an active antenna of the rotary transceiver is placed in the first drill pipe by drilling hole through the protective connector; an optical fiber communication drawworks is located at the top of a second drill pipe, the optical fiber is downwardly released into other under-well drill pipes, the bottom of the optical fiber is connected with the well-bottom wireless receiving module; the lowest part of the drill pipe are provided with a drilling data acquisition device and a well-bottom wireless transmitting module. In the present invention, the optical fiber cable is used as transmission medium, by the means of modulating information data obtained by well logging into optical wave, and transmitting to the optical communication link, high-speed bi-directional transmission of well logging information can be realized.

公开(公告)号：US20190002344A1

公开(公告)日：2019-01-03

申请号：US15749780

申请日：2017-02-14

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Ping GUO ,  Shuai WU ,  Yijian CHEN ,  Huimin ZHANG ,  Wanbo ZHANG ,  Yuhong DU ,  Zhouhua WANG ,  Jianfen DU ,  Yisheng HU ,  Huang LIU ,  Hongmei REN

IPC: C04B20/10 ,  C04B28/04 ,  C04B14/04 ,  C04B14/06 ,  C09K8/46 ,  C04B40/00 ,  G01N1/28

CPC classification number: C04B20/1025 ,  B28B7/384 ,  C04B14/04 ,  C04B14/06 ,  C04B28/04 ,  C04B40/0067 ,  C04B2111/00991 ,  C09K8/46 ,  G01N1/286 ,  G01N2001/2866 ,  G01N2001/2893 ,  C04B20/008

Abstract: A manufacturing method of a big-model low-permeability microcrack core includes: (1) determining the size of a microcrack core to be manufactured; (2) placing stones in a baking oven to bake for 24 h under 120° C., placing the stones into a mixer, mixing and spraying oil, enabling the oil to seep into the stone, evenly forming a thin oil film on stone's surface; (3) mixing the oil sprayed stone with quartz sand and cement, adding water to mix evenly to obtain cement paste; (4) spreading butter on core mould's inner surface to form a thin butter film, pouring the cement paste into the core mould to obtain a cement sample; (5) loading confining pressure outside the core according to the requirements of porosity and permeability of the mould to adjust a pore permeability value; (6) obtaining the big-model core with microcrack after the cement sample is dried and formed.

公开(公告)号：US20180348105A1

公开(公告)日：2018-12-06

申请号：US15775391

申请日：2016-12-02

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Ping GUO ,  Shuai WU ,  Wanbo ZHANG ,  Yisheng HU ,  Yijian CHEN ,  Huimin ZHANG ,  Zhouhua WANG ,  Jianfen DU ,  Huang LIU ,  Hongmei REN

IPC: G01N1/36 ,  G01N15/08

CPC classification number: G01N1/36 ,  G01N15/082 ,  G01N15/088 ,  G01N33/241 ,  G01N2001/2873 ,  G01N2001/366

Abstract: A direct method for manufacturing a large model fractured core and maintaining original oil-water saturation, including the following steps: (1) determining the volume V, porosity φ, permeability K, oil saturation So, water saturation Sw and the like of a fractured core to be manufactured; (2) preparing simulated oil, and determining the used oil mass mo=Vo×ρo; (3) under the circumstance of no consideration of oil saturation, acquiring the mass of the used water, cement and quartz sand; (4) while establishing oil saturation, acquiring the mass mw of water for manufacturing the core as mw=a−Vo×ρw; (5) mixing oil, water and an emulsifier evenly to prepare an oil-in-water emulsion; (6) adding cement and quartz sand into the emulsion and stirring evenly to obtain cement slurry; (7) when a cement sample is in a semi-solidified state, cutting the cement sample with a steel wire; and (8) solidifying the cement sample to the end.